How many Mary Allison census records do you have?

We have 3873 US Census records for Mary Allison, from 1900 to 1950, across 49 states and DC.

What's in a Mary Allison census record?

You'll see Mary's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.

How do I use census records for family research?

Census records are a snapshot of a family every 10 years. You can follow Mary Allison's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.

Are Mary Allison census records free?

Yes. All Mary Allison census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.

Which census years and states cover Mary Allison?

We have Mary Allison records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Allison in the census?

Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.

What is the Model Tree for Mary Allison?

The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.

Where does the census data come from?

All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

Mary Allison — US Census Records & Model Tree

We found 3873 free census records for Mary Allison across 6 census years (1900–1950), in 49 states and DC and 1014 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Allison Census Records by State & County

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Showing of 3873 records for Mary Allison US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary Allison		Jackson, North Carolina	North Carolina	—	Daughter
1940	Mary Lucy Allison	26	White-County, Georgia	Georgia	—	Wife
1900	Mary Allison	63	Washington, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Allison	29	Orange-County, North Carolina	North Carolina	Maid	Daughter
1920	Mary Allison		Payne, Oklahoma	Kentucky	None	Wife
1940	Mary Allison	62	Denver-County, Colorado	Missouri	—	Head
1920	Mary Allison		Chester, Pennsylvania	New Jersey	—	Wife
1940	Mary Allison	57	Nicholas-County, Kentucky	Kentucky	—	Wife
1920	Mary Allison		Mifflin, Pennsylvania	Pennsylvania	—	Wife
1920	Mary M Allison		Orange, North Carolina	North Carolina	—	Head
1940	Mary Allison	48	Allegheny-County, Pennsylvania	Pennsylvania	—	Head
1920	Mary K Allison		Schuylkill, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary L Allison		Hall, Georgia	Georgia	—	Daughter
1920	Mary B Allison		Dallas, Alabama	Alabama	Helper	Daughter
1920	Mary W Allison		Smyth, Virginia	Virginia	—	Daughter
1940	Mary Lou Allison	18	Davidson-County, Tennessee	Tennessee	Cook	Daughter
1920	Mary B. Allison		Duval, Florida	Florida	Billing Clerk	Daughter
1940	Mary Bell Allison	14	Burke-County, Georgia	Georgia	—	Daughter
1910	Mary Allison		Guernsey, Ohio	Ohio	—	Wife
1930	Mary Jane Allison		Mcdowell, North Carolina	North Carolina	None	Wife
1930	Mary Allison		Wythe, Virginia	Virginia	—	Daughter
1930	Mary Allison		Hill, Texas	Texas	—	Daughter
1930	Mary Allison		St Landry, Louisiana	Louisiana	—	Daughter
1940	Mary R Allison	17	Cleveland-County, North Carolina	North Carolina	—	Daughter
1930	Mary Allison		Dade, Missouri	Missouri	—	Daughter
1940	Mary Allison	44	St.-Landry-County, Louisiana	Louisiana	—	Wife
1940	Mary L. Allison	19	Lewis-County, Missouri	Illinois	Housework	Daughter
1930	Mary Allison		Haywood, North Carolina	North Carolina	—	Daughter
1900	Mary E. Allison	44	Osage, Kansas	Iowa	—	Wife
1920	Mary Allison		York, South Carolina	South Carolina	—	Daughter

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About Mary Allison US Census Records & Model Tree

We've indexed 3873 free, proprietary US Census records for Mary Allison across 1900–1950, covering 49 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming.

Each record includes our Model Tree — a longitudinal reconstruction that links the same person across census decades using machine learning (XGBoost record linkage). Every link carries a confidence score: Verified (≥0.99), Confirmed (≥0.95), or Linked (lower confidence). This tells you not just what the census says, but how reliably we've connected records across time.

Every record also shows the full household — who Mary lived with, their ages, birthplaces, and occupations. For 1940 and 1950 records, you can view the original handwritten census page from the National Archives.

How we build the Model Tree. YourRoots independently indexes US Census records from NARA microfilm and links persons across decades using XGBoost-based record linkage. Each link's confidence is a per-pair match score from the model. Household corroboration (co-residents appearing on the same census pages in multiple years) strengthens the signal. The Model Tree is not a family tree submitted by users — it's reconstructed from the census data itself.

Last updated: July 30, 2026

Frequently Asked Questions

: We have 3873 US Census records for Mary Allison, from 1900 to 1950, across 49 states and DC.
: You'll see Mary's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.
: Census records are a snapshot of a family every 10 years. You can follow Mary Allison's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.
: Yes. All Mary Allison census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.
: We have Mary Allison records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters above to narrow your results.
: Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.
: The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.
: All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.